Quote from OddTrader:
Would it be possible to trade an options strategy consistently profitably without considering/using anythine about deltas, gammas, thetas, etc.?
Any theoretical comments, pros and cons?
Has anyone got any practical experience, whether good and bad?
Naked long calls/puts on a short time frame as pure directional plays can probably be done if you understand the leverage and risks of being naked (but if you're are that good on direction, probably just use the underlying).
Anything combining two or more positions though, like straddles, calendars, etc., it's imperative to understand implied volatility's role in pricing...if you don't, your trade could result in a loss, even if you are right on direction! Know vega.
I mention short time frame earlier because you also have to understand the greek theta, which represents time decay. If you own stock and the price stays flat at say $50, for a month, you don't lose money. But if you bought a $50 call option, you are losing money everyday that month due to theta (if long options).
I'm just getting into this stuff myself, and there are plenty of great websites with basic introductions. Try this one:
http://www.optiontradingpedia.com/
ET's archives are also chok full of good discussions. Click search, type anything you think about.
I think the main thing is that you said
"...trade an options strategy consistently..." - if you want to trade any options strategy consistently, I think eventually you'll want to understand the greeks behind it. It'll make you a better, more informative trader no doubt.
I keep bringing it up, but there is a thread called "SPX Credit Spread Trader" where a bunch of traders discussed trading credit spreads from '05-'07. In my opinion (I read the thread front to back in about three weeks), some of them did not understand the greeks in the vertical strategy they employed, but many of them made money (probably due to low vol environment in that period).
To shut myself up, I'll just say, read all the free shit you can find on the greeks on the internet. And then perhaps buy some books too. I just ordered Natenberg's Option Volatility and Pricing. If it makes you a better trader, why not?